Thompsons Water Seal on repointed red bricks

[Possom]

If the red brick walls of a 1930s house have just recently had the mortar repointed, is it a good idea to coat the wall and mortar in a coat of Thompsons WaterSeal Ultra?

Obviously it'll help to keep out moisture, which is good, perhaps though it might reduce the ability of the house walls to "breathe", if that's something a wall requires?

If applied, presumably a period of time (weeks) should be allowed to ensure the mortar has thoroughly dried.

 

[^woody^]

You can paint it on any time you like, but it's a waste of time unless you have a damp problem you are trying to solve - and which should have been solved by repointing in any case.

 

[Crystalclear]

You could always drill a single hole through the pointing and see if the the pointing disintegrates or is still a tad 'wet'?

Last time I looked into TW, EU regs had it changed from oil based to water based. Oh, and it let's the brick breathe. 'Some say' it lets water in too? I'm still 50 50 on this.

 

[gregers]

as above,like any old product which was spirit based,it was the spirit that helped the chemical to soak deeper within the walls/timber,
now its all gone over to water bourne products personally if the wall is already damp/wet how can the chemical soak in as deep??